Valve cover



FIG. 1 is a front perspective view of a valve cover;

FIG. 2 is a top view of the valve cover;

FIG. 3 is a front view of the valve cover;

FIG. 4 is a left side view of the valve cover;

FIG. 5 is a right side view of the valve cover; and,

FIG. 6 is a rear view of the valve cover.

The broken lines shown in the figures are included for the purpose of illustrating elements of the valve cover and form no part of the claimed design. 

CLAIM The ornamental design for a valve cover, as shown and described. 